The 5-Second Trick For Crystal
The 5-Second Trick For Crystal
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天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏，就没有利用价值。
A crystal structure concentrates on how the atoms are organized In the crystal. However, crystallographers have an interest in the overall form and size of the crystal in addition to its external attributes. To perform this, they should know about the crystal procedure.
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
Crystalline composition is characterized by a geometric, repeating pattern of symmetric molecular framework. The arrangement of atoms kinds these purchased, repeating styles.
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水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。
Crystals are almost nothing greater than an ordered arrangement of molecules or atoms. Crystals come in many alternative sizes and styles, and every one has distinctive features. What they are made of establishes how it can kind.
第三种是“皮景”，因某些其他的矿物与水晶体共生，或由于其他的物质侵蚀而依附于水晶表面，或者是水晶受自然环境的影响，在水晶表面出现蚀象，形成了一些景象或图案，这种景观存在于水晶表面。
Solids which have quick-range purchase but absence extended-vary purchase are referred to as amorphous. Just about any material could be manufactured amorphous by immediate solidification from the soften (molten state). This affliction is unstable, along with the stable will crystallize in time. When the timescale for crystallization here is years, then the amorphous condition appears steady.
15The trick to a good thermoelectric materials is a crystal structure during which electrons can flow freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
Crystallography is definitely the research of crystals, and it specials with everything from best geometric shapes to seemingly random conglomerations of particles and minerals.
The framework on the sodium atoms by yourself, or the chlorine atoms by itself, is fcc and defines the unit cell. The sodium chloride structure Hence is built up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) relies on the bcc framework; each individual other atom is cesium or chlorine. In such a case, the unit mobile is often a cube. The 3rd critical structure for AB
Fig. 5: The ability to recognize defined crystal habits is depending on the symmetry engineering method.